updates

Author: smidl

docs/src/lecture_03/lecture.md

@@ -457,6 +457,7 @@ Many fundamental objects can be iterated: Arrays, Tuples, Data collections...
 
 Example: of interface ```Iterators```
 defined by "duck typing" via two functions.
+
 |Required methods	|	Brief description|
 | --- | --- |
 |iterate(iter)		| Returns either a tuple of the first item and initial state or nothing if empty|

docs/src/lecture_04/lecture_draft.md

@@ -1,16 +1,32 @@
 # Package development
 
+
+## Modules, namespaces
+- why namespaces
+  - Too general name "create", "extend", "loss", 
+  - may not be an issue if used with different types
+- Julia syntax
+  ```julia
+  module MySpace
+  function test1
+    println("test1")
+  end
+  function test1
+    println("test1")
+  end
+  end
+  ```
+
+- using .MySpace
+- export, import 
+- conflicts (as )
+
 ## namespaces & scoping
 - local/global scope
 - soft/hard
-- let 
-- for loops?
-  - (outer keyword)
-- differences in REPL?
 
-## modules
-- exporting
-- conflicts
+- table of soft vs. hard
+
 
 ## packages = modules
 - template structure src/, script/, tests/, docs/
@@ -30,11 +46,25 @@
 
 ## Unit testing
 - write tests
-- pitfals testing (checkbounds = yes)
+  - check e.g. interfaces (i.e. missing functions)
+  - @test, @testset
+- pitfals testing (checkbounds = yes)?
 - testing in github-actions
 - testing with RNG (version changes)
 - testing gradients (FiniteDifferences)
 
 ## Precompilation
 - new method -> invalidating methods
-- cache
+- cache
+
+## Revise.jl
+- load before others
+- includet for files
+- adding deleting functions from module works
+
+## Style Guide
+- docstrings
+- style
+  - modules, types - CamelCase
+  - functions, instances - lowercase
+  - modifying function !